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2. Overhead projector - Wikipedia

   en.wikipedia.org/wiki/Overhead_projector

   In contrast, a modern LCD or DLP projector often uses an Ultra-high-performance lamp which has a higher luminous efficacy and lasts for thousands of hours. [5] A drawback of that technology is the warm up time required for such lamps. Older overhead projectors used a tubular quartz bulb which was mounted above a bowl-shaped polished reflector.

3. Projector - Wikipedia

   en.wikipedia.org/wiki/Projector

   A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens , but some newer types of projectors can project the image directly, by using lasers .

4. Acer Inc. - Wikipedia

   en.wikipedia.org/wiki/Acer_Inc.

   Acer America Corporation, headquartered in San Jose, California, is a member of the Acer Group. Acer's R&D, engineering, manufacturing, and marketing operations in the United States and Canada are handled by Acer America. The U.S. headquarters was opened with a staff of three in 1985, as Multitech Electronics USA, in Mountain View, California ...

5. Optical printer - Wikipedia

   en.wikipedia.org/wiki/Optical_printer

   At D is the lens of the camera, the camera's finder is at E and the adjustable shutter control at F. The heavy base G contains all the electronics needed for controlling the printer. Inexpensive J-K 16 mm optical printer using a Bolex camera. An optical printer is a device consisting of one or more film projectors mechanically linked to a movie ...

6. Projection screen - Wikipedia

   en.wikipedia.org/wiki/Projection_screen

   Projection screen in a movie theater Home theater projection screen displaying a high-definition television image. A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience.

7. Handheld projector - Wikipedia

   en.wikipedia.org/wiki/Handheld_projector

   Handheld projectors, in particular projector phones, could offer new possibilities for mobile gaming, as demonstrated by the adaptation of the PlayStation 3 game LittleBigPlanet. Players can sketch a world on a sheet of paper or use an existing physical configuration of objects and let the physics engine simulate physical procedures in this ...

8. Carousel slide projector - Wikipedia

   en.wikipedia.org/wiki/Carousel_slide_projector

   A carousel slide projector. The example pictured is a Kodak Carousel model 4400, dating from the mid-1980s. A carousel slide projector is a slide projector that uses a rotary tray to store slides, used to project slide photographs and to create slideshows. It was first patented on May 11, 1965, by David E. Hansen of Fairport, New York.

9. Dot matrix printing - Wikipedia

   en.wikipedia.org/wiki/Dot_matrix_printing

   Dot matrix printers are a type of impact printer that prints using a fixed number of pins or wires [2] [3] and typically use a print head that moves back and forth or in an up-and-down motion on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper. They were also known as serial dot matrix printers. [4]